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Finding the Fourth Proportional to 647,810.70, 970,403.85 and 366,999.90

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Solution

The fourth proportional to 647,810.70, 970,403.85 and 366,999.90 is: 549,756.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,810.70 : 970,403.85 = 366,999.90 : x
  2. Step 2: Convert to fraction form
    647,810.70/970,403.85 = 366,999.90/x
  3. Step 3: Cross multiply
    647,810.70x = 970,403.85 × 366,999.90
  4. Step 4: Simplify right side
    647,810.70x = 356,138,115,909.62
  5. Step 5: Solve for x
    x = 356,138,115,909.62/647,810.70
  6. Step 6: Final answer
    x = 549,756.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.